Former Strikeforce heavyweight champion and recent UFC signee Alistair Overeem has split from his longtime MMA team Golden Glory, he announced today on Twitter.

“As with any relationship, you have trust,” he wrote. “When differences lead to a breach of trust, there’s no turning back and no way to continue a positive, working relationship.”

Golden Glory head Bas Boon today told MMAjunkie.com (www.mmajunkie.com) that he may take legal action against the fighter.

“I wasn’t really surprised, actually, after the last three months because he already had a lot of different ideas on how he would divide certain percentages which were normal in the past, and apparently, are not now,” he said. “I think the judge will decide on this issue that we have, and when that is decided, we will see who was right and who was not.”

Martin De Jong, one of Overeem’s trainers at Golden Glory, believes Overeem’s departure relates only to the management side of his relationship with the team, but he isn’t sure whether the fighter will train with him again.

“I’m stuck in the middle,” he said.

Overeem offered few details about his decision to leave the team, and he requested privacy in the matter. His representatives were unavailable for additional comment.

“I don’t air my dirty laundry,” he wrote in his statement.

The news comes weeks after Overeem (35-11 MMA, 0-0 UFC) signed a multi-fight deal with the UFC that includes a headlining fight against Brock Lesnar (5-2 MMA, 4-2 UFC) at UFC 141, which takes place Dec. 30 at the MGM Grand Garden Arena in Las Vegas. It was an abrupt turnaround from his fortunes just a few months prior when he was released from Strikeforce along with three other Golden Glory fighters.

During that time, a public dispute arose between the MMA team and UFC/Strikeforce parent company Zuffa LLC. UFC president Dana White said the cuts were made because Golden Glory insisted on routing fighter payments through them, as opposed to directly to the fighters.

Overeem had been a participant in the Strikeforce heavyweight grand prix, though he turned down a fight in the semifinals on Sept. 10 against Antonio Silva due to injury.

Boon later told MMAjunkie.com that his team was willing to work with the UFC and hoped to return to the negotiating table. UFC officials announced Overeem’s new deal early this month.

“The deal with the UFC was done by me,” Boon said. “This was a brilliant deal out of a very difficult situation. Four Golden Glory guys were sacked by Zuffa, and I made a statement, and I negotiated a very, very good contract in good faith with the UFC.

“The UFC is not to blame for this. I understand that they wanted direct payments to fighters. They made their rules very clear, and we obeyed that and didn’t have any problems with that. I think now, this thing could actually be a benefit for us.”

Overeem on Monday told MMAFighting.com that he’s still waiting for the benefit from his performance at the 2010 K-1 World Grand Prix. The Japanese kickboxing promotion has yet to pay him for his fight against Peter Aerts in the competition’s finals. He said he planned to sue.

“Maybe that has to do with it, as well,” Boon said. “Everybody has problems with this, and I’m trying to do my best to solve this matter in Japan. It’s not easy, and of course, people are getting restless, and some people need to point the finger at certain people when things go wrong, but the only thing we can do is our best. It looks good, but these things take time.”

However, the manager said he has yet to hear an official reason for the departure since the announcement.

“I’ve been together with Alistair for 12 years,” he said. “He slept in my house; I treated him like real friends. It’s kind of sad that maybe other influences by other people made him decide to go away, especially on the deal of a lifetime. That’s very disappointing.”